|All images courtesy: Impact Recovery Systems|
Mark: What are rebounding bollards and how do they work?
SlowStop Bollards are made of steel with an elastomer hidden in the base. When a vehicle impacts the bollard, the post and elastomer act together to absorb the energy to stop the vehicle, then rebound to an upright position. This reduces damage to the vehicle, bollard, and foundations, and also reduces the chance of injury to passengers.”
Mark: At what vehicle speeds are rebounding bollards most effective?
Ken: “In general, they are used at lower speeds from 0 to 10 mph. We have bollards from 3” to 6” in diameter that vary in their stopping power, which depends on the expected weight of the vehicle as well as the speed. For a typical 4,000 pound car or light truck, our 4” bollard would absorb up to 4 mph, and our 6” up to 8 mph. Multiple bollards, such as in a picket fence arrangement, work together to increase stopping power. You can find tables that show energy absorption capabilities here.”
Mark: In what types of specific locations/applications do rebounding bollards work best?
Ken: “I would recommend SlowStop Bollards for a storefront that doesn’t have direct access to the public street where vehicles might veer off at a high speed. If your parking lot is protected and lower speeds are expected, steel rebounding bollards are a great choice to reduce maintenance and damage from nuisance impacts.”
Mark: Do rebounding bollards require periodic maintenance of any type to ensure their effectiveness and longevity?
Mark: Generally speaking, how do rebounding bollards compare to other bollard types on cost?
Ken: “The bollards themselves are more expensive than simply buying steel pipe; however, installation costs can be greatly reduced because they are surface mounted. Because they are sold as a system, they are usually pre-pained and come with all necessary hardware such as anchors. Long-term costs can also be reduced due to lower maintenance and replacement costs.”
Mark: Thanks for this information, Ken. One more time…where can people reach you if they have questions?
Ken: “They can contact me right here at Impact Recovery Systems.”
Editor's Note: For general information about various types and applications of bollards, visit the Whole Building Design Guide primer on bollards from the National Institute of Building Sciences.